Ответы и объяснения

2014-03-25T08:57:50+04:00
8(x^2-y^2)=8(x+y)(x-y)a^2+6a-9=3(a+1-sqrt(2))(a+1+sqrt(2))ab^3-ba^3=ab(b^2-a^2)=ab(a+b)(a-b)a^3-8=(a-2)(a^2+4+2a)x(x^2-2-x)=x^3-x^2x^3-2x-x^2=x^3-x^2x=03x-3y+x^2y-xy^2=3(x-y)+xy(x-y)=(x-y)(3+xy)1) 8х^2-8y^2 = 8(x^2-y^2) = 8(x-y)(x+y)2)a^2+6a-9  = (a+3) (a+3)D = 36-36=0x1 = -6/2 = -3